Pentel claim to have inspired much of the worlds writing instrument technology through their innovation. With its triangular delta shaped nib this disposable fountain pen has water based acid free ink, lets see how it fared.
The Fountain Pentel JM20MB has a sturdy masculine looking barrel which is predominately black subtly mixed with an abstract looking pattern. They are available with black red & blue ink, the former has gold hues, red & blue follow the theme identifying the ink colour in the barrel & also with accents on the pocket clip & nib.
This pen is described by Pentel as having a variable line width with a flexible response one side & firm feel on the other. I didn't know what I would make of this, with no clue of what a delta nib was & limited experience of fountain pens. The way I write is not something I generally pay too much attention to but I've decided that my style of writing could be described as any which way as I twist & turn the pen whilst willing the brain to catch up & unscramble my thoughts.
Initially I was pleasantly surprised with the results of this triangular shaped nib. A few words in however & the text changed leaving an even scruffier looking sentence than the norm. The smooth writing experience I had been expecting didn't happen. The more I concentrated on the process of writing the more exhausted I felt & I prefer to put my grey matter to better use.
Pentel don't define the line width produced by this plastic nib, in practice it varies depending on the angle at which you hold it & the pressure applied. FP fans will be used to the different effects the choice of nib size, ink & paper have, the Fountain Pentel can produce two different looking styles of writing without having to change the nib.
The double sided delta shaped nib on the Pentel Fountain pen does produce a noticeable difference depending how the pen is held, although subtle you may be able to see in the written example.